#ifndef DST_H#define DST_H#ifndef HAS_DST_KEYtypedef struct dst_key {	char	*dk_key_name;   /* name of the key */	int	dk_key_size;    /* this is the size of the key in bits */	int	dk_proto;       /* what protocols this key can be used for */	int	dk_alg;         /* algorithm number from key record */	unsigned dk_flags;     /* and the flags of the public key */	unsigned dk_id;        /* identifier of the key */} DST_KEY;#endif /* HAS_DST_KEY *//*  * DST Crypto API defintions  */void     dst_init(void);int      dst_check_algorithm(const int);int dst_sign_data(const int mode,	 /* specifies INIT/UPDATE/FINAL/ALL */		  DST_KEY *in_key,	 /* the key to use */		  void **context,	 /* pointer to state structure */		  const u_char *data,	 /* data to be signed */		  const unsigned len,	 /* length of input data */		  u_char *signature,	 /* buffer to write signature to */		  const unsigned sig_len); /* size of output buffer */int dst_verify_data(const int mode,	 /* specifies INIT/UPDATE/FINAL/ALL */		    DST_KEY *in_key,	 /* the key to use */		    void **context,	 /* pointer to state structure */		    const u_char *data,  /* data to be verified */		    const unsigned len,	 /* length of input data */		    const u_char *signature,/* buffer containing signature */		    const unsigned sig_len);	 /* length of signature */DST_KEY *dst_read_key(const char *in_name,   /* name of key */		      const unsigned in_id, /* key tag identifier */		      const int in_alg,      /* key algorithm */		      const int key_type);   /* Private/PublicKey wanted*/int      dst_write_key(const DST_KEY *key,  /* key to write out */		       const int key_type); /* Public/Private */DST_KEY *dst_dnskey_to_key(const char *in_name,	/* KEY record name */			   const u_char *key,	/* KEY RDATA */			   const unsigned len);	/* size of input buffer*/int      dst_key_to_dnskey(const DST_KEY *key,	/* key to translate */			   u_char *out_storage,	/* output buffer */			   const unsigned out_len); /* size of out_storage*/DST_KEY *dst_buffer_to_key(const char *key_name,  /* name of the key */			   const int alg,	  /* algorithm */			   const unsigned flags,  /* dns flags */			   const int protocol,	  /* dns protocol */			   const u_char *key_buf, /* key in dns wire fmt */			   const unsigned key_len);	  /* size of key */int     dst_key_to_buffer(DST_KEY *key, u_char *out_buff, unsigned buf_len);DST_KEY *dst_generate_key(const char *name,    /* name of new key */			  const int bits,      /* size of new key */			  const int exp,       /* alg dependent parameter*/			  const unsigned flags,     /* key DNS flags */			  const int protocol, /* key DNS protocol */			  const int alg);       /* key algorithm to generate */DST_KEY *dst_free_key(DST_KEY *f_key);int      dst_compare_keys(const DST_KEY *key1, const DST_KEY *key2);int	dst_sig_size(DST_KEY *key);int     dst_random(const int mode, unsigned wanted, u_char *outran);/* support for dns key tags/ids */u_int16_t dst_s_dns_key_id(const u_char *dns_key_rdata,			   const unsigned rdata_len);u_int16_t dst_s_id_calc(const u_char *key_data, const unsigned key_len);/* Used by callers as well as by the library.  */#define RAW_KEY_SIZE    8192        /* large enough to store any key *//* DST_API control flags *//* These are used used in functions dst_sign_data and dst_verify_data */#define SIG_MODE_INIT		1  /* initalize digest */#define SIG_MODE_UPDATE		2  /* add data to digest */#define SIG_MODE_FINAL		4  /* generate/verify signature */#define SIG_MODE_ALL		(SIG_MODE_INIT|SIG_MODE_UPDATE|SIG_MODE_FINAL)/* Flags for dst_read_private_key()  */#define DST_FORCE_READ		0x1000000#define DST_CAN_SIGN		0x010F#define DST_NO_AUTHEN		0x8000#define DST_EXTEND_FLAG         0x1000#define DST_STANDARD		0#define DST_PRIVATE             0x2000000#define DST_PUBLIC              0x4000000#define DST_RAND_SEMI           1#define DST_RAND_STD            2#define DST_RAND_KEY            3#define DST_RAND_DSS            4/* DST algorithm codes */#define KEY_RSA			1#define KEY_DH			2#define KEY_DSA			3#define KEY_PRIVATE		254#define KEY_EXPAND		255#define KEY_HMAC_MD5		157#define KEY_HMAC_SHA1		158#define UNKNOWN_KEYALG		0#define DST_MAX_ALGS            KEY_HMAC_SHA1/* DST constants to locations in KEY record  changes in new KEY record */#define DST_FLAGS_SIZE		2#define DST_KEY_PROT		2#define DST_KEY_ALG		3#define DST_EXT_FLAG            4#define DST_KEY_START		4#ifndef SIGN_F_NOKEY #define SIGN_F_NOKEY		0xC000#endif/* error codes from dst routines */#define SIGN_INIT_FAILURE	(-23)#define SIGN_UPDATE_FAILURE	(-24)#define SIGN_FINAL_FAILURE	(-25)#define VERIFY_INIT_FAILURE	(-26)#define VERIFY_UPDATE_FAILURE	(-27)#define VERIFY_FINAL_FAILURE	(-28)#define MISSING_KEY_OR_SIGNATURE (-30)#define UNSUPPORTED_KEYALG	(-31)#endif /* DST_H */